Gather your income documents, such as W-2s, 1099s, and any state tax forms
Check your state’s filing requirements and deadlines
Determine whether you need to file a state return based on your residency and income
Obtain the correct state tax forms from your state tax agency website
Complete your state return using the forms or approved tax software
Include any state-specific deductions, credits, and withholding information
Review your return for accuracy
File your state return online or by mail
Pay any state taxes owed by the deadline
Keep copies of your filed return and supporting documents for your records